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du Plooy J, Jahed N, Iwuoha E, Pokpas K. Advances in paper-based electrochemical immunosensors: review of fabrication strategies and biomedical applications. ROYAL SOCIETY OPEN SCIENCE 2023; 10:230940. [PMID: 38034121 PMCID: PMC10685120 DOI: 10.1098/rsos.230940] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 11/03/2023] [Indexed: 12/02/2023]
Abstract
Cellulose paper-based sensing devices have shown promise in addressing the accuracy, sensitivity, selectivity, analysis time and cost of current disease diagnostic tools owing to their excellent physical and physiochemical properties, high surface-area-to-volume ratio, strong adsorption capabilities, ease of chemical functionalization for immobilization, biodegradability, biocompatibility and liquid transport by simple capillary action. This review provides a comprehensive overview of recent advancements in the field of electrochemical immunosensing for various diseases, particularly in underdeveloped regions and globally. It highlights the significant progress in fabrication techniques, fluid control, signal transduction and paper substrates, shedding light on their respective advantages and disadvantages. The primary objective of this review article is to compile recent advances in the field of electrochemical immunosensing for the early detection of diseases prevalent in underdeveloped regions and globally, including cancer biomarkers, bacteria, proteins and viruses. Herein, the critical need for new, simplistic early detection strategies to combat future disease outbreaks and prevent global pandemics is addressed. Moreover, recent advancements in fabrication techniques, including lithography, printing and electrodeposition as well as device orientation, substrate type and electrode modification, have highlighted their potential for enhancing sensitivity and accuracy.
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Affiliation(s)
- Jarid du Plooy
- SensorLab, Department of Chemistry, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa
| | - Nazeem Jahed
- SensorLab, Department of Chemistry, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa
| | - Emmanuel Iwuoha
- SensorLab, Department of Chemistry, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa
| | - Keagan Pokpas
- SensorLab, Department of Chemistry, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa
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An integrated electrochemical platform empowered by paper for fast nickel detection in cosmetics. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kuswandi B, Hidayat MA, Noviana E. Paper-Based Electrochemical Biosensors for Food Safety Analysis. BIOSENSORS 2022; 12:1088. [PMID: 36551055 PMCID: PMC9775995 DOI: 10.3390/bios12121088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Nowadays, foodborne pathogens and other food contaminants are among the major contributors to human illnesses and even deaths worldwide. There is a growing need for improvements in food safety globally. However, it is a challenge to detect and identify these harmful analytes in a rapid, sensitive, portable, and user-friendly manner. Recently, researchers have paid attention to the development of paper-based electrochemical biosensors due to their features and promising potential for food safety analysis. The use of paper in electrochemical biosensors offers several advantages such as device miniaturization, low sample consumption, inexpensive mass production, capillary force-driven fluid flow, and capability to store reagents within the pores of the paper substrate. Various paper-based electrochemical biosensors have been developed to enable the detection of foodborne pathogens and other contaminants that pose health hazards to humans. In this review, we discussed several aspects of the biosensors including different device designs (e.g., 2D and 3D devices), fabrication techniques, and electrode modification approaches that are often optimized to generate measurable signals for sensitive detection of analytes. The utilization of different nanomaterials for the modification of electrode surface to improve the detection of analytes via enzyme-, antigen/antibody-, DNA-, aptamer-, and cell-based bioassays is also described. Next, we discussed the current applications of the sensors to detect food contaminants such as foodborne pathogens, pesticides, veterinary drug residues, allergens, and heavy metals. Most of the electrochemical paper analytical devices (e-PADs) reviewed are small and portable, and therefore are suitable for field applications. Lastly, e-PADs are an excellent platform for food safety analysis owing to their user-friendliness, low cost, sensitivity, and a high potential for customization to meet certain analytical needs.
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Affiliation(s)
- Bambang Kuswandi
- Chemo and Biosensors Group, Faculty of Farmasi, University of Jember, Jember 68121, Indonesia
| | - Mochammad Amrun Hidayat
- Chemo and Biosensors Group, Faculty of Farmasi, University of Jember, Jember 68121, Indonesia
| | - Eka Noviana
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
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Plot-on-demand integrated paper-based sensors for drop-volume voltammetric monitoring of Pb(II) and Cd(II) using a bismuth nanoparticle-modified electrode. Mikrochim Acta 2022; 189:240. [PMID: 35641709 DOI: 10.1007/s00604-022-05335-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/09/2022] [Indexed: 10/18/2022]
Abstract
The fabrication of fully ink-drawn fluidic electrochemical paper-based analytical devices (ePADs) is reported for the determination of trace Pb(II) and Cd(II) by differential pulse anodic stripping voltammetry (DPASV). The fluidic pattern was formed on the paper substrate using an inexpensive computer-controlled x-y plotter and a commercial hydrophobic marker pen. Then, electrodes were deposited on the devices using a second x-y plotting step with a commercial technical pen filled with a graphite-based conductive ink prepared in house. The fabrication parameters of the ePADs were studied by cyclic voltammetry using the ferro/ferri couple as a probe and by scanning electron microscopy. The ePADs, featuring a bismuth nanoparticle-modified working electrode, were applied to the determination of Pb(II) and Cd(II) by DPASV. The chemical and instrumental conditions were studied. The limits of detection were 3.1 μg L-1 for Cd(II) and 4.5 μg L-1 for Pb(II) whereas the between-device reproducibility (expressed as the % relative standard deviation of the response at 6 different ePADs) was < 14%. Each ePAD requires 120 s to fabricate and costs less than 0.15 € in terms of consumables. The ePADs are suitable for the on-site determination of Pb(II) and Cd(II) in environmental and food samples.
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Okpara EC, Fayemi OE, Wojuola OB, Onwudiwe DC, Ebenso EE. Electrochemical detection of selected heavy metals in water: a case study of African experiences. RSC Adv 2022; 12:26319-26361. [PMID: 36275116 PMCID: PMC9475415 DOI: 10.1039/d2ra02733j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 08/30/2022] [Indexed: 11/21/2022] Open
Abstract
The safety of water resources throughout the globe has been compromised by various human activities and climate change over the last decades.
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Affiliation(s)
- Enyioma C. Okpara
- Department of Physics, School of Physical and Chemical Sciences, Faculty of Natural and Agricultural Sciences, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South Africa
| | - Omolola E. Fayemi
- Department of Chemistry, School of Physical and Chemical Sciences, Faculty of Natural and Agricultural Sciences, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South Africa
- Material Science Innovation and Modelling (MaSIM) Research Focus Area, Faculty of Natural and Agricultural Sciences, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South Africa
| | - Olanrewaju B. Wojuola
- Department of Physics, School of Physical and Chemical Sciences, Faculty of Natural and Agricultural Sciences, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South Africa
| | - Damian C. Onwudiwe
- Department of Chemistry, School of Physical and Chemical Sciences, Faculty of Natural and Agricultural Sciences, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South Africa
- Material Science Innovation and Modelling (MaSIM) Research Focus Area, Faculty of Natural and Agricultural Sciences, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South Africa
| | - Eno E. Ebenso
- College of Science, Engineering and Technology, University of South Africa, Johannesburg 1710, South Africa
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Soulis D, Trachioti M, Kokkinos C, Economou A, Prodromidis M. Single-Use Fluidic Electrochemical Paper-Based Analytical Devices Fabricated by Pen Plotting and Screen-Printing for On-Site Rapid Voltammetric Monitoring of Pb(II) and Cd(II). SENSORS (BASEL, SWITZERLAND) 2021; 21:6908. [PMID: 34696121 PMCID: PMC8539493 DOI: 10.3390/s21206908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 02/07/2023]
Abstract
This work reports the fabrication of integrated electrochemical fluidic paper-based analytical devices (ePADs) using a marker pen drawing and screen-printing. Electrodes were deposited on paper using screen-printing with conductive carbon ink. Then, the desired fluidic patterns were formed on the paper substrate by drawing with a commercial hydrophobic marker pen using an inexpensive computer-controlled x-y plotter. The working electrode was characterized by cyclic voltammetry and scanning electron microscopy. The analytical utility of the electrochemical PADs is demonstrated through electrochemical determination of Pb(II) and Cd(II) by anodic stripping voltammetry. For this purpose, the sample was mixed with a buffer solution and a Bi(III) solution, applied to the test zone of the PAD, the metals were preconcentrated as a bismuth alloy on the electrode surface and oxidized by applying an anodic potential scan. The proposed manufacturing approach enables the large-scale fabrication of fit-for-purpose disposable PADs at low cost which can be used for rapid on-site environmental monitoring.
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Affiliation(s)
- Dionysios Soulis
- Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece; (D.S.); (C.K.)
| | - Maria Trachioti
- Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece; (M.T.); (M.P.)
| | - Christos Kokkinos
- Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece; (D.S.); (C.K.)
| | - Anastasios Economou
- Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece; (D.S.); (C.K.)
| | - Mamas Prodromidis
- Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece; (M.T.); (M.P.)
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Pokpas K, Jahed N, McDonald E, Bezuidenhout P, Smith S, Land K, Iwuoha E. Graphene‐AuNP Enhanced Inkjet‐printed Silver Nanoparticle Paper Electrodes for the Detection of Nickel(II)‐Dimethylglyoxime [Ni(dmgH
2
)] Complexes by Adsorptive Cathodic Stripping Voltammetry (AdCSV). ELECTROANAL 2020. [DOI: 10.1002/elan.202060379] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Keagan Pokpas
- SensorLab, Department of Chemistry University of the Western Cape Robert Sobukwe Road Bellville 7530 South Africa
| | - Nazeem Jahed
- SensorLab, Department of Chemistry University of the Western Cape Robert Sobukwe Road Bellville 7530 South Africa
| | - Earl McDonald
- Electron Microscope Unit, Physics Building University of the Western Cape Robert Sobukwe Road Bellville 7530 South Africa
| | - Petrone Bezuidenhout
- Materials Science and Manufacturing Council for Scientific and Industrial Research (CSIR) Meiring Naude Road, Brummeria Pretoria 0001 South Africa
| | - Suzanne Smith
- Materials Science and Manufacturing Council for Scientific and Industrial Research (CSIR) Meiring Naude Road, Brummeria Pretoria 0001 South Africa
- Department of Electrical, Electronic, and Computer Engineering University of Pretoria Hatfield 0028 South Africa
| | - Kevin Land
- Materials Science and Manufacturing Council for Scientific and Industrial Research (CSIR) Meiring Naude Road, Brummeria Pretoria 0001 South Africa
- Department of Electrical, Electronic, and Computer Engineering University of Pretoria Hatfield 0028 South Africa
| | - Emmanuel Iwuoha
- SensorLab, Department of Chemistry University of the Western Cape Robert Sobukwe Road Bellville 7530 South Africa
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Baharfar M, Rahbar M, Tajik M, Liu G. Engineering strategies for enhancing the performance of electrochemical paper-based analytical devices. Biosens Bioelectron 2020; 167:112506. [PMID: 32823207 DOI: 10.1016/j.bios.2020.112506] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 08/07/2020] [Accepted: 08/07/2020] [Indexed: 12/15/2022]
Abstract
Applications of electrochemical detection methods in microfluidic paper-based analytical devices (μPADs) has revolutionized the area of point-of-care (POC) testing towards highly sensitive and selective quantification of various (bio)chemical analytes in a miniaturized, low-coat, rapid, and user-friendly manner. Shortly after the initiation, these relatively new modulations of μPADs, named as electrochemical paper-based analytical devices (ePADs), gained widespread popularity within the POC research community thanks to the inherent advantages of both electrochemical sensing and usage of paper as a suitable substrate for POC testing platforms. Even though general aspects of ePADs such as applications and fabrication techniques, have already been reviewed multiple times in the literature, herein, we intend to provide a critical engineering insight into the area of ePADs by focusing particularly on the practical strategies utilized to enhance their analytical performance (i.e. sensitivity), while maintaining the desired simplicity and efficiency intact. Basically, the discussed strategies are driven by considering the parameters potentially affecting the generated electrochemical signal in the ePADs. Some of these parameters include the type of filter paper, electrode fabrication methods, electrode materials, fluid flow patterns, etc. Besides, the limitations and challenges associated with the development of ePADs are discussed, and further insights and directions for future research in this field are proposed.
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Affiliation(s)
- Mahroo Baharfar
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney NSW, 2052, Australia
| | - Mohammad Rahbar
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney NSW, 2052, Australia
| | - Mohammad Tajik
- School of Chemistry, The University of New South Wales, Sydney NSW, 2052, Australia
| | - Guozhen Liu
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney NSW, 2052, Australia.
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